CN106464624A - A signal demodulating device for an enclosed communications system and a method thereof - Google Patents
A signal demodulating device for an enclosed communications system and a method thereof Download PDFInfo
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- CN106464624A CN106464624A CN201680000578.4A CN201680000578A CN106464624A CN 106464624 A CN106464624 A CN 106464624A CN 201680000578 A CN201680000578 A CN 201680000578A CN 106464624 A CN106464624 A CN 106464624A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2338—Demodulator circuits; Receiver circuits using non-coherent demodulation using sampling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/06—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0079—Receiver details
- H04L7/0087—Preprocessing of received signal for synchronisation, e.g. by code conversion, pulse generation or edge detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
- H04L27/1566—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using synchronous sampling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
A signal demodulating device for an enclosed communications system and a method thereof are provided. The device includes an analog voltage comparator for converting a received modulated signal into a digital signal and outputting the digital signal; and a sampling decision means for sampling the received digital signal and obtaining the value represented by the digital signal according to the characteristics of the sampled digital signal so as to complete single demodulation. The device and the method improve the signal-to-noise ratio of pressure detection, reduce power consumption, and increase the refresh rate. The device and the method have advantages of simple structures, easy realization, a small circuit area, low power consumption, and the like and are suitable for use in situations where power consumption and area requirements are strict, such as wearable equipment.
Description
Technical field
The application is related to signal demodulation techniques field, particularly to a kind of signal demodulation dress being applied to close communication system
Put and method.
Background technology
Conventional digital modulation mode has several as follows：Binary system amplitude shift key modulation (Binary Amplitude
Shift Keying, i.e. 2ASK), Binary Frequency Shift Keying modulation (Binary Frequency Shift Keying, that is,
2FSK), binary phase shift keying modulation (Binary Phase Shift Keying, i.e. 2PSK) etc., corresponding demodulation mode one
As include：Filtering, envelope detected, local carrier multiplication, sampling judgement etc..
For non-close communication system, due to the modulation system of receiving terminal uncertain transmitting terminal, therefore in order to avoid it
His modulated signal, to needing the interference of modulated signal that is demodulated, needs the complicated demodulator circuit of setting.
Referring to Fig. 1, typical 2FSK demodulation method modulates letter in order to avoid other modulated signals such as 2ASK, 2PSK to 2FSK
Number interference, it needs to configure 4 wave filter, 2 envelope detectors, sampling decision devices.This demodulation method is more complicated,
Implement the circuit area needing to expend and power consumption all can be than larger it is difficult to meet the application of super low-power consumption.For closing
Communication system, because receiving terminal has determined that the modulation system of transmitting terminal, including information such as the amplitude of carrier wave, frequency and length, connects
Receiving end would only receive a kind of this modulated signal it is not necessary that needing to consider other modulated signals as non-close communication system
Interference.
According to above as can be seen that the communication system of closing has following characteristics：Communication signal is single, and modulation system is fixed,
Electric energy limited power consumption.If the signal demodulating equipment of existing communication system is applied to close
Therefore, need a kind of signal demodulating equipment being applied to close communication system badly to solve to ask present in prior art
Topic.
Content of the invention
In view of the above problems, the application provide a kind of overcome the problems referred to above or solve the above problems at least in part should
For closing signal demodulating equipment and the method for communication system.
The application one side provides a kind of signal demodulating equipment being applied to closing communication system, including：
Analog voltage comparator, for the modulated signal of reception is converted to digital signal, and exports described digital signal；
Sampling decision device, for sampling to the described digital signal receiving, and the feature according to sampled digital signal
The value obtaining described digital signal representation is to complete signal demodulation.
The application another aspect provides a kind of signal demodulating method being applied to closing communication system, including：
The modulated signal of reception is converted to digital signal；
Described digital signal is sampled, and described digital signal representation is obtained according to the feature of sampled digital signal
Value is to complete signal demodulation.
According to the signal demodulating equipment and the method that are applied to closing communication system of the application, by analog voltage comparator
Modulated-analog signal is converted to digital signal, and sampling decision device is sampled by described digital signal and feature is sentenced
Disconnected, the value obtaining described digital signal representation is to complete signal demodulation.Therefore, the application adopts simple circuit structure to closing
The modulated signal of communication system is demodulated, and has circuit structure simple, it is easy to accomplish, circuit area is little and power consumption is low excellent
Point, is suitably applied in the scene stricter to power consumption and area requirements, such as wearable device etc..
Described above is only the general introduction of technical scheme, in order to better understand the technological means of the application,
And can be practiced according to the content of description, and in order to allow above and other objects, features and advantages of the application can
Become apparent, below especially exemplified by the specific embodiment of the application.
Brief description
By reading the detailed description of hereafter preferred implementation, various other advantages and benefit are common for this area
Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as to the application
Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical part.In the accompanying drawings：
Fig. 1 shows existing 2FSK demodulator circuit schematic diagram；
Fig. 2 shows that the application is applied to close the schematic diagram of signal demodulating equipment one embodiment of communication system；
Fig. 3 shows that the application is applied to analog voltage comparator one enforcement in the signal demodulating equipment close communication system
The schematic diagram of example；
Fig. 4 shows that input signal is that 2ASK modulated signal passes through analog voltage comparator and the signal of sampling decision device
Schematic diagram；
Fig. 5 shows that input signal is that 2FSK modulated signal passes through analog voltage comparator and the signal of sampling decision device
Schematic diagram；
Fig. 6 shows that input signal is that 2PSK modulated signal passes through analog voltage comparator and the signal of sampling decision device
Schematic diagram；
Fig. 7 shows that the application is applied to sampling decision device one embodiment in the signal demodulating equipment close communication system
Schematic diagram；
Fig. 8 shows that the application is applied to the flow chart closing signal demodulating method one embodiment of communication system；
Fig. 9 shows that the application is applied to the flow process of step S1 mono- embodiment in the signal demodulating method close communication system
Figure；
Figure 10 shows that the application is applied to the stream of step S2 mono- embodiment in the signal demodulating method close communication system
Cheng Tu.
Specific embodiment
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to be able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Referring to Fig. 2, the embodiment of the present application provides a kind of signal demodulating equipment being applied to closing communication system, including：
Analog voltage comparator 21, for the modulated signal of reception is converted to digital signal, and exports described numeral letter
Number.
Sampling decision device 22, for sampling to the described digital signal receiving, and the spy according to sampled digital signal
Levy the value obtaining described digital signal representation to complete signal demodulation.
The application is demodulated to the modulated signal of closing communication system using simple circuit structure, has circuit structure
Simply, it is easy to accomplish, circuit area little and low in energy consumption the advantages of, be suitably applied in the field stricter to power consumption and area requirements
Scape, such as wearable device etc..
Another embodiment of the application provides a kind of signal demodulating equipment being applied to closing communication system, including analog voltage
Comparator 21 and sampling decision device 22.
Referring to Fig. 3, described analog voltage comparator 21 includes：
Signal input part 211, for receiving described modulated signal.
Threshold value input 212, for receiving comparator threshold voltage.
Signal output part 213, for the comparative result output according to described modulated signal and described comparator threshold voltage
Digital signal.
Described signal output part 213 specifically for：When the voltage of described modulated signal is more than described comparator threshold voltage
When, export the first numerical value digital signal；Otherwise, export second value digital signal.
Specifically, described first numerical value is 1；Described second value is 0.
When the modulated signal that signal input part 211 receives is through described analog voltage comparator 21, only need to be by described electricity
The comparator threshold voltage of pressure comparator 21 is set to a suitable value, common digital modulation signals 2ASK, 2FSK and
After 2PSK etc. passes through described analog comparater 21, will being compared of described modulated signal and described comparator threshold voltage
Afterwards, numerical value 0 and numerical value 1 all can have obvious different characteristic.Therefore, can be obtained according to described obvious different characteristic
Obtain the digital signal of 1 or 0 composition of described signal output part 213 output of analog voltage comparator 21.
2ASK modulated signal is by the demodulating process of described analog voltage comparator 21 as shown in figure 4,2FSK modulated signal
By voltage comparator demodulating process as shown in figure 5,2PSK modulated signal is as shown in Figure 6 by voltage comparator demodulating process.
Can be seen that for specific digital modulation signals, after described analog voltage comparator 21, the side of acquisition from above-mentioned accompanying drawing
Ripple has obvious different characteristic：After over-voltage comparator demodulation, square wave high level represents numerical value 1 to 2ASK modulated signal,
Square wave low value represents numerical value 0, and after over-voltage comparator demodulation, square wave closely represents numerical value 1 to 2FSK modulated signal, and square wave is sparse
Represent numerical value 0, after over-voltage comparator demodulation, cosine wave represents numerical value 1 to 2PSK modulated signal, sine wave numerical value up to standard 0, root
According to features described above, obtain the digital signal of 1 or 0 composition of described signal output part 213 output of analog voltage comparator 21.
In order to reach preferable demodulation effect, described comparator threshold voltage is the one of the crest voltage of described modulated signal
Half, concrete numerical value can be adjusted according to described signal demodulating equipment application scenarios.
Another embodiment of the application provides a kind of signal demodulating equipment being applied to closing communication system, including analog voltage
Comparator 21 and sampling decision device 22.
Referring to Fig. 7, described sampling decision device 22 includes：
High frequency clock sample circuit 221, for sampling to described digital signal using high frequency clock, and exports sampling
Signal.
Specifically, the frequency of described high frequency clock is according to the pulse width of described digital signal and described signal demodulating equipment
Application scenarios determine.
In order to reach preferable demodulation effect, described high frequency clock sample circuit utilizes high frequency clock to be directed to described numeral letter
The high level of number arbitrary pulse is at least sampled two points.
Described sampled signal is continuous binary code stream.
Feature extraction decision circuit 222, for carrying out feature extraction to the described sampled signal receiving, by the spy being extracted
Levy and be compared with the feature of known digital modulated signal, the value obtaining described digital signal representation is to complete signal demodulation.
The feature of described extraction is：The detection pulse width of described sampled signal, the cycle, rising edge, in trailing edge at least
One.
The feature of the feature of described extraction and known digital modulated signal is compared, obtains described digital signal representation
Value, as shown in Figures 4 to 6, thus completing the demodulation of described signal.
Referring to Fig. 8, the embodiment of the present application provides a kind of signal demodulating method being applied to closing communication system, including：
S1, the modulated signal of reception is converted to digital signal.
S2, described digital signal is sampled, and described digital signal generation is obtained according to the feature of sampled digital signal
The value of table is to complete signal demodulation.
The application is demodulated to the modulated signal of closing communication system using simple circuit structure, has circuit structure
Simply, it is easy to accomplish, circuit area little and low in energy consumption the advantages of, be suitably applied in the field stricter to power consumption and area requirements
Scape, such as wearable device etc..
Another embodiment of the application provide a kind of is applied to close communication system signal demodulating method, including step S1 with
And step S2.
Referring to Fig. 9, described step S1 includes：
S11, the described modulated signal of reception.
S12, reception comparator threshold voltage.
S13, the comparative result output digit signals according to described modulated signal and described comparator threshold voltage.
Described S13 specifically includes：When the voltage of described modulated signal is more than described comparator threshold voltage, export first
Numerical value digital signal；Otherwise, export second value digital signal.
Specifically, described first numerical value is 1；Described second value is 0.
When the modulated signal receiving is through described analog voltage comparator, only need to be by the comparator of described voltage comparator
Threshold voltage is set to a suitable value, and common digital modulation signals 2ASK, 2FSK and 2PSK etc. pass through described simulation ratio
Compared with after device, will be after being compared of described modulated signal and described comparator threshold voltage, numerical value 0 and numerical value 1 all can have ratio
Significantly different characteristic.Therefore, the institute of analog voltage comparator 21 can according to described obvious different characteristic, be obtained
State the digital signal of 1 or 0 composition of signal output part 213 output.
2ASK modulated signal is by the demodulating process of described analog voltage comparator 21 as shown in figure 4,2FSK modulated signal
By voltage comparator demodulating process as shown in figure 5,2PSK modulated signal is as shown in Figure 6 by voltage comparator demodulating process.
Can be seen that for specific digital modulation signals, after described analog voltage comparator 21, numerical value " 0 " from above-mentioned accompanying drawing
There is obvious different characteristic with numerical value " 1 ", obtain described signal output part 213 output of analog voltage comparator 21
The digital signal of 1 or 0 composition.
In order to reach preferable demodulation effect, described comparator threshold voltage is the one of the crest voltage of described modulated signal
Half, concrete numerical value can be adjusted according to described signal demodulating equipment application scenarios.
Another embodiment of the application provide a kind of is applied to close communication system signal demodulating method, including step S1 with
And step S2.
Referring to Figure 10, described step S2 includes：
S21, using high frequency clock, described digital signal is sampled.
Specifically, the frequency of described high frequency clock is according to the pulse width of described digital signal and described signal demodulating equipment
Application scenarios determine.
In order to reach preferable demodulation effect, described high frequency clock sample circuit utilizes high frequency clock to be directed to described numeral letter
The high level of number arbitrary pulse is at least sampled two points.
Described sampled signal is continuous binary code stream.
S22, feature extraction is carried out to sampled signal, the feature of the feature extracted and known digital modulated signal is carried out
Relatively, the value obtaining described digital signal representation is to complete signal demodulation.
The feature of described extraction is：The detection pulse width of described sampled signal, the cycle, rising edge, in trailing edge at least
One.
The feature of the feature of described extraction and known digital modulated signal is compared, obtains described digital signal representation
Value, as shown in Figures 4 to 6, thus completing the demodulation of described signal.
Algorithm and display be not inherently related to any certain computer, virtual system or miscellaneous equipment provided herein.
Various general-purpose systems can also be used together with based on teaching in this.As described above, construct required by this kind of system
Structure be obvious.Additionally, the application is also not for any certain programmed language.It is understood that, it is possible to use various
Programming language realizes present context described here, and the description above language-specific done is to disclose this Shen
Preferred forms please.
In description mentioned herein, illustrate a large amount of details.It is to be appreciated, however, that the enforcement of the application
Example can be put into practice in the case of not having these details.In some instances, known method, structure are not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly it will be appreciated that in order to simplify the disclosure and help understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the application, each feature of the application is grouped together into single enforcement sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
Shield this application claims than the feature that is expressly recited in each claim more features.More precisely, it is such as following
Claims reflected as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
The claims following specific embodiment are thus expressly incorporated in this specific embodiment, wherein each claim itself
All as the separate embodiments of the application.
Those skilled in the art are appreciated that and the module in the equipment in embodiment can be carried out adaptively
Change and they are arranged in one or more equipment different from this embodiment.Can be the module in embodiment or list
Unit or assembly be combined into a module or unit or assembly, and can be divided in addition multiple submodule or subelement or
Sub-component.In addition to such feature and/or at least some of process or unit exclude each other, can adopt any
Combination is to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so disclosed
Where method or all processes of equipment or unit are combined.Unless expressly stated otherwise, this specification (includes adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can carry out generation by the alternative features providing identical, equivalent or similar purpose
Replace.
Although additionally, it will be appreciated by those of skill in the art that some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiment means to be in the application's
Within the scope of and form different embodiments.For example, in the following claims, embodiment required for protection appoint
One of meaning can in any combination mode using.
The all parts embodiment of the application can be realized with hardware, or to run on one or more processor
Software module realize, or with combinations thereof realize.It will be understood by those of skill in the art that can use in practice
Microprocessor or digital signal processor (DSP) are realizing some in the device according to the prompting message of the embodiment of the present application
Or some or all functions of whole parts.The application is also implemented as being adapted for carrying out the one of method as described herein
Partly or completely equipment or program of device (for example, computer program and computer program).Such realization is originally
The program of application can store on a computer-readable medium, or can have the form of one or more signal.So
Signal can download from internet website and obtain, or provide on carrier signal, or provided with any other form.
" embodiment ", " embodiment " or " one or more embodiment " referred to herein is it is meant that combine
The special characteristic of embodiment description, structure or characteristic are included at least one embodiment of the application.Further, it is noted that
Here the word example of " in one embodiment " is not necessarily all referring to same embodiment.
In description mentioned herein, illustrate a large amount of details.It is to be appreciated, however, that the enforcement of the application
Example can be put into practice in the case of not having these details.In some instances, known method, knot are not been shown in detail
Structure and technology, so as not to obscure the understanding of this description.
It should be noted that above-described embodiment illustrates rather than to the application limiting to the application, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference markss between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element listed in the claims or step.Word "a" or "an" before element does not exclude the presence of multiple such
Element.The application can come real by means of the hardware including some different elements and by means of properly programmed computer
Existing.If in the unit claim listing equipment for drying, several in these devices can be by same hardware branch
To embody.The use of word first, second, and third does not indicate that any order.These words can be explained and run after fame
Claim.
Claims (20)
1. a kind of signal demodulating equipment being applied to close communication system is it is characterised in that include：
Analog voltage comparator, for the modulated signal of reception is converted to digital signal, and exports described digital signal；
Sampling decision device, for sampling to the described digital signal receiving, and obtains according to the feature of sampled digital signal
The value of described digital signal representation is to complete signal demodulation.
2. it is applied to as claimed in claim 1 close the signal demodulating equipment of communication system it is characterised in that described simulation is electric
Pressure comparator includes：
Signal input part, for receiving described modulated signal；
Threshold value input, for receiving comparator threshold voltage；
Signal output part, for the comparative result output numeral letter according to described modulated signal and described comparator threshold voltage
Number.
3. it is applied to as claimed in claim 2 close the signal demodulating equipment of communication system it is characterised in that described signal is defeated
Go out end specifically for：When the voltage of described modulated signal is more than described comparator threshold voltage, output the first numerical value numeral letter
Number；Otherwise, export second value digital signal.
4. it is applied to as claimed in claim 3 close the signal demodulating equipment of communication system it is characterised in that described first counts
It is worth for 1；Described second value is 0.
5. being applied to as any one of claim 2 to 4 closes the signal demodulating equipment of communication system, and its feature exists
In described comparator threshold voltage is the half of the crest voltage of described modulated signal.
6. it is applied to as claimed in claim 1 close the signal demodulating equipment of communication system it is characterised in that described sampling is sentenced
Certainly device includes：
High frequency clock sample circuit, for sampling to described digital signal using high frequency clock, and exports sampled signal；
Feature extraction decision circuit, for carrying out feature extraction to the described sampled signal receiving, by the feature extracted and
Know that the feature of digital modulation signals is compared, the value obtaining described digital signal representation is to complete signal demodulation.
7. it is applied to close the signal demodulating equipment of communication system it is characterised in that during described high frequency as claimed in claim 6
The frequency of clock determines according to the pulse width of described digital signal and the application scenarios of described signal demodulating equipment.
8. it is applied to close the signal demodulating equipment of communication system it is characterised in that during described high frequency as claimed in claim 7
Clock sample circuit is at least sampled two points using the high level that high frequency clock is directed to the arbitrary pulse of described digital signal.
9. it is applied to as claimed in claim 8 close the signal demodulating equipment of communication system it is characterised in that described sampling is believed
Number be continuous binary code stream.
10. it is applied to as claimed in claim 6 close the signal demodulating equipment of communication system it is characterised in that described extraction
Feature be：The detection pulse width of described sampled signal, cycle, rising edge, at least one in trailing edge.
A kind of 11. signal demodulating methods being applied to close communication system are it is characterised in that include：
The modulated signal of reception is converted to digital signal；
Described digital signal is sampled, and according to the feature of sampled digital signal obtain the value of described digital signal representation with
Complete signal demodulation.
12. are applied to close the signal demodulating method of communication system it is characterised in that described will connect as claimed in claim 11
The modulated signal received is converted to digital signal and includes：
Receive described modulated signal；
Receive comparator threshold voltage；
Comparative result output digit signals according to described modulated signal and described comparator threshold voltage.
13. are applied to close the signal demodulating methods of communication system it is characterised in that described basis as claimed in claim 12
Described modulated signal is specially with the comparative result output digit signals of described comparator threshold voltage：When described modulated signal
When voltage is more than described comparator threshold voltage, export the first numerical value digital signal；Otherwise, export second value digital signal.
14. are applied to close the signal demodulating methods of communication system it is characterised in that described first as claimed in claim 13
Numerical value is 1；Described second value is 0.
15. being applied to as any one of claim 12 to 14 close the signal demodulating method of communication system, its feature
It is, described comparator threshold voltage is the half of the crest voltage of described modulated signal.
16. as claimed in claim 11 be applied to close communication system signal demodulating methods it is characterised in that described to institute
State digital signal to be sampled, and the value of described digital signal representation is obtained to complete signal according to the feature of sampled digital signal
Demodulation includes：
Using high frequency clock, described digital signal is sampled；
Feature extraction is carried out to sampled signal, the feature of the feature extracted and known digital modulated signal is compared, obtains
The value obtaining described digital signal representation is to complete signal demodulation.
17. are applied to close the signal demodulating methods of communication system it is characterised in that described high frequency as claimed in claim 16
The frequency of clock determines according to the pulse width of described digital signal and the application scenarios of described signal demodulating equipment.
18. are applied to close the signal demodulating methods of communication system it is characterised in that described high frequency as claimed in claim 17
Clock sampling circuit is at least sampled two points using the high level that high frequency clock is directed to the arbitrary pulse of described digital signal.
19. are applied to close the signal demodulating methods of communication system it is characterised in that described sampling as claimed in claim 18
Signal is continuous binary code stream.
20. are applied to close the signal demodulating methods of communication system it is characterised in that described extraction as claimed in claim 16
Feature be：The detection pulse width of described sampled signal, cycle, rising edge, at least one in trailing edge.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/089742 WO2018010082A1 (en) | 2016-07-12 | 2016-07-12 | Signal demodulating device and method applying to closed communication system |
Publications (2)
| Publication Number | Publication Date |
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| CN106464624A true CN106464624A (en) | 2017-02-22 |
| CN106464624B CN106464624B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201680000578.4A Active CN106464624B (en) | 2016-07-12 | 2016-07-12 | A kind of signal demodulating equipment and method applied to closing communication system |
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| Country | Link |
|---|---|
| US (2) | US10291388B2 (en) |
| EP (1) | EP3324590B1 (en) |
| KR (1) | KR20180116119A (en) |
| CN (1) | CN106464624B (en) |
| WO (1) | WO2018010082A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108055220A (en) * | 2017-12-12 | 2018-05-18 | 成都宝通天宇电子科技有限公司 | ASK amplitudes adaptive noise cancellation (anc) sound demodulating algorithm and device |
| CN110611514A (en) * | 2019-09-20 | 2019-12-24 | 盛纬伦(深圳)通信技术有限公司 | Signal demodulation system, method and computer storage medium for distributed receiver |
| CN113395070A (en) * | 2021-04-12 | 2021-09-14 | 上海昱章电气成套设备有限公司 | Analog signal processing method and device and computer equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11303165B2 (en) * | 2020-07-24 | 2022-04-12 | Nucurrent, Inc. | Low cost communications demodulation for wireless power receiver system |
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Also Published As
| Publication number | Publication date |
|---|---|
| US10523410B2 (en) | 2019-12-31 |
| EP3324590A1 (en) | 2018-05-23 |
| WO2018010082A1 (en) | 2018-01-18 |
| US20180026780A1 (en) | 2018-01-25 |
| EP3324590B1 (en) | 2019-12-18 |
| KR20180116119A (en) | 2018-10-24 |
| US20190207741A1 (en) | 2019-07-04 |
| EP3324590A4 (en) | 2018-09-12 |
| CN106464624B (en) | 2019-04-09 |
| US10291388B2 (en) | 2019-05-14 |
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